Add clips to your movie in iMovie on Mac - Apple Support
Apple introduces new version of iMovie featuring Storyboards and Magic Movie - Apple
Add video to your trailer in iMovie on Mac - Apple Support (CA)
iMovie User Guide for Mac - Apple Support (CA)
If you can't hear sound in your iMovie for Mac project - Apple Support (CA)
Not able to add anything to my slideshow.… - Apple Community
Create a picture-in-picture effect in iMovie on Mac - Apple Support (CA)
Add titles in iMovie on Mac - Apple Support
Change the background of a clip in iMovie - Apple Support (CA)
Edit clips in Magic Movies and storyboard projects in iMovie on iPad – Apple Support (MY)
Change the background of a clip in iMovie - Apple Support (CA)
iMovie Tutorial for Mac - The COMPLETE Guide!